Hotbed



10 Sheets-Sheet l E. T. PETERSON HOTBED Original Filed Aug. 29, 1929 E.T. PETERSON Original Filed Aug. 29, 1929 1 Sheets-Sheet 2 Ndv. 14,1933.

E. T. PETERSON HOTBED Originai Filed Aug. 29, 1929 v 10 Sheets-Sheet 3E. T. PETERSON Re. 18,996

HOTBED Nov. 14-, 1933.

Original Filed Aug. 29, 1929 10 Sheets-Sheet 4 HOTBED Original FiledAug. 29; 1929 10 Sheets-Sheet 5 w W M \w W 1 i I m. n 3 pg: J I r FILI IIII II,IIIIII.ITIIIMI IIIIIIIIIIIIIIVIREPI IIIIIIIIH% h M W Em d ..I Imm m m mriiIwwlLQ. Q\ a? 3 2. Em/ N w w w @s M I MITMMWLWIIIIIIHHHHIIIIIH IIIH HHHHWIIIIIHAWIIIIIIW IIII 4 II. I III I \I.I,|| Iv m km fi HOTBED 10 Sheets-Sheet 6 Original Filed Aug. 29, 1929 wm m m Kw NFL. E. A $N QQH E. U M m m 1... 1| 1: unrl i Ma mam QM &\ R mg.3 mm QR QMW m Mm QM kw M\H HA w H .C r H1. 5... KN 4 P. 0 r1 0 o 0 9 oo. o o o o n o Nov. 14, 1933. E, T, PETERSON HOTBED Original Filed Aug.29, 1929 HOTBED Original Filed Aug. 29. 1929 10 Sheets-Sheet 8 Ml ml flW. 5 f i i QW kw E.- T. PETERSON HOTBED o l t e e h S S t e e h s 0 1Original Filed Aug. 29, 1929 gwomtoc Reissue d 14, 1933 I i HOTBEDEdward T. Peterson, Reading, Pa; assignor to Birdsboro Steel Foundry andMachine Company, Birdsboro, Pa., a corporation of Pennsylvania OriginalNo. 1,834,728, dated December 1, 1931, k

Serial No. 389,119, August 29, 1929. Application for reissue May 8,1983. Serial No. 670,021

36 Claims. (Cl. 80-42) My invention relates to apparatus for use in tobe treated is transferred from the delivery rolling mills and the likefor cooling bars, rounds, table onto the hot bed bars; and other likemetal products, such apparatus Fig. 4 is a transverse sectional viewsimilar to being generally known in the art as hot beds. that of Fig.3,, but showing certain parts of the 5 The general object of theinvention is to prostructure in greater detail; 60

vide an apparatus having means whereby the Fig. 5 is alongitudinalsectional view of a fragwork to be cooled may be caused orpermitted to mentary portion of the structure taken on the travel atrelatively low speed or rapidly across line 55 of Fig. 3; the hot bedstructure. Fig. 6 is a similar view taken on the line 6-6 It also is anobject of the invention to provide of Fig. 3; n 65 a hot bed havingnovel means for delivering the Fig. 7 is a transverse sectional viewshowing an work to be cooled onto the transversely extendenlargement ofa portion of the structure which ing bars of the hot bed structure. isillustrated in Fig. 2; V n

A further object is to provide means of nove Fig. 8 is a horizontalsectional view taken on construction whereby the work to be cooled, theline 88 of Fig. 7;

consisting of bars or the like, may be transferred Fig. 9 is ahorizontal plan view taken in the over the same hot bed upon selectivelydifferent plane 9--9 of Fig. '7; surfaces, which, for example, may besmooth or Fig. 10 is a-longitudinal sectional view taken serrated. onthe line 10-10 of Fig. '7 indicating a portion A still further object ofthe invention is to of the means by which the positions of the hotprovide means whereby either notched or smooth bed bars may be regulatedand controlled and by topped or edged hot bed bars may be presentedwhich they may be actuated; for supporting the work to be cooled as itis Fig. 11 is a transverse sectional view showing moved across the hotbed structure. the means by which the controlling means for 2 A'stillfurther object of the invention is to prothe hot bed bars may beactuated;. vide an improved and novel construction of means Fig. 11 is aview in sideelevation of a fragfor operating the hot bed bars and forvarying mentary portion of the structure looking from the movementsthereof for eifecti'ng conveyance the right toward the left in Fig. 11;

of the work across the structure. Fig. 12 is a .view partly in top planand partly 30 I shall not attempt here to set forth the many inhorizontal section showing a portion of the other objects which arecharacteristic of the means by which certain movements of the hotinvention but additional objects either will be bed bars are effected;

specifically pointed out in the detailed descrip- Fig. 13 is a view inside elevation of the mechtion which follows or will be apparent fromsuch anism or means shown in Fig. 12;

35 description. 1 Fig. 14 is a transverse sectional view taken on Inorder that the invention may be readily unthe line 14-914 of Fig. 12;'derstood. and its many practical advantages Fig. 15 is a similar viewtaken on the line clearly appreciated reference should be had to l515 ofFig. 12;

the accompanying drawings wherein I have il- Fig. 16 is a similar viewtaken on the line 1616 40 lustrated an apparatus embodying the inventionof Fig. 12; and in the form which at present is preferred .by me. Fig.1'? is a transverse sectional view similar to However, it will beunderstood that the inventhat shown in Fig.3 showing a modifiedconstruction is susceptible of embodiment in other forms tion of meansfor transferring the work to be of construction than that shown and thatchanges treated from the delivery table to the hot bed 45 in the detailsof construction may be made with- .bars. in the scope of the claimswithout departing from In the operation of the apparatus the work theinvention or the principle thereof. to be treated, which may be in theform of bars,

In the drawings: rounds and the like, is conveyed from the mill to Fig.1 is a view in top plan of a fragmentary what is known as {the approachtable of the 50 part ofthe hot bed structure including the front hot bedapparatus, from which it is transferred end portionthereof; onto thebars which. extend cross wise of the. Fig. 2 is a typical transversesectional view of hot bed structure and by which the work to be thestructure; cooled is conveyed transversely of the structure Fig. 3 is atypical transverse sectional view of from one side to the ot er thereof.From the the portion of the apparatus by which the work saidbars'thework, whatever it may be, is transi ferred to conveying means bywhich it is conducted away from the hot bed structure.

In the construction of apparatus as illustrated I have shown in thefirst figures of the drawings a construction by the use of which thework to be treated may be transferred directly from the approach tableonto the hot bed bars or else the transfer may be made by anintermittent or step-by-step movement. In the latter event the operationwhich may be described as pack annealing may be efi'ected. However, inthe form ,of construction as illustrated in Fig. 17 of the drawings Ihave made no provision for the latter operation but have provided meanswhereby the work may be transferred from the approach table to the hotbed bars. v

I shall now proceed with a detailed description of my invention and indoing so shall refer to the drawings employing like characters'ofreference for corresponding parts of the mechanism which may appear inthe several figures thereof.

In the drawings I have indicated diagrammatically at 1 by dash and dotlines (Fig. 1) a fragmentary portion of the discharge end of the meansby which the work is conveyed from the mill to the rotating rollers ordrums 2 which constitute a part of the approach means of the apparatus.These rollers or drums are separately driven by meansof electric motors3. Plates 4' (Figs. 1 and 2) constituting what may be defined as theapproach table' of the apparatus are located between the rotatingrollers or drums 2- (Figs. 1, 2, 3, 5 and 17). These plates aresupported upon the lower edges of sills 6 which are supported upon theinner ends of inwardly and upwardly extending arms '7 which arepivotally supported at their outer ends upon brackets 8 which in turnare supported upon stationary sills 9, the adjoining ends of which areslightly separatedas shown in Fig. 5. These sills are mounted uponstationary base members 10. The

arms '7 are normally supported in the position in which the arm shown inFig. 3 is supported.

. The means for supporting and actuating the arms 7 to raise and lowerthe plates 4 comprises rods 11 located at intervals which are connectedat their lower ends to arms 12 which extend laterally from straps 13mounted upon the eccentric or crank portions 14 of a crank shaftcomprising the solid and tubular portions 15 and 16 connected togetherin end-to-end relation as indicated in'Fig. 5 of the drawings. The upperends of the rods 11 extend upwardly through the arms 7 between lugs ortears 17'which project upwardly therefrom and through members 18pivotally supported upon the said lugs. The upper ends of the rods 11are retained in connection with the members 18 by means of nuts 19. Therods 11 are in slidable engagement with the members 18. t

The arms 7 are provided with shoulders or brackets 20 (only one of whichis shown) (Figs. 3 and 17) upon their underneath sides near their upperends. The lower sides of these shoulders are provided respectively withdepressions 21 constituting seats with which the upper ends of bearingblocks 22 are in engagement. These bearing blocks are slidably mountedupon rods 23 which are pivoted at their lower ends to lugs 24 (Figs. 3and 5) provided upon the upper edges of the stationary sills 9, as shownin Fig. 5 of the drawings. These rods 23 extend upwardly throughopenings in the brackets or shoulders 20. The upper sides of thebrackets or shoulders 20 are provided with slight depressions in 0plowerends of the said springs are seated upon shoulders 26 provided upon therods 23 at theirlower ends. The upper ends of the said springs bearagainst the under sides of the blocks 22 and hold them firmly againstthe seats 21 in the lower sides of the shoulders or brackets 20.

The straps 13 are provided with downwardly extending arms 27 to thelower ends of which are connected the outer swinging ends of links 28pivoted at their opposite ends to stationary pivots as indicated at 29.

It will be understood that when the plates 4 and I the levers 7 are inthe positions indicated in Fig. 3 of the drawings the springs 25 will becompressed and that they exert a constant pressure against the levers '7to elevate them together with the parts carried thereby so as to elevatethe plates 4 to positions such that their upper surfaces will be locatedin a plane above a plane tangent to the tops of the rollers or drums 2so as to stop the feeding movement of the work by the said rollers ordrums and so also as to permit transference of the work from theapproach table in the manner and by the means to be hereinafterdescribed.

It will be understood that upon rotative movement of the shaftcomprising the parts 16 and 15 the straps 13 will be moved correspondingto the movements of the eccentrics or cranks 14. Such movements, owingto the connection of the-arms,

2'7 with the outer swinging ends of the links 28 will include a pivotalmotion so as to cause upward and downward movement of the outer ends ofthe arms 12 to effect a corresponding movement of the rods 11.

Upon upward movementof the said rods they will slide or tend to slide ormove upwardly with respect to the levers 7, but owing to the pressure ofthe springs 25 against the said levers through the bearing blocks 22 thesaid'levers likewise will move upwardly and the plates 4 therebytransferred into positionswith their upper surfaces occupying a planeabove a plane tangential to the tops of the rollers or drums 2 aspreviously stated. During the pivotal movement of the straps 13 the arms12 thereof move downwardly and cause a like downward movement of therods 11, which operates to pull the levers 7 downwardly in opposltion tothe upward pressure of the springs 25'.

It will be seen that by the foregoing construction the levers '7 and theplates 4 supported thereby are yieldingly held whereby the mechanismsinvolved in operation are not subjected to destructive shocks andvibrations.

Any suitable means may be employed for operating the shaft comprisingthe parts 15 and 16 (Figs. 1 and'i). It will be understood that theoperation of the parts must be so related and timed that the rods 11will be raised to permit elevation of the. arms 7 and the plates 4carried thereby at the proper time with respect to the position of abar, round or other work uponthe rollers or drums 2. In other words, theplates 4 are lifted or elevated after the work has arrived at a properposition thereover. That isa common requirement of apparatus of thisclass. K

For the purpose of removing the bars, rounds or other work from theplates 4 Ihave provided kickofl. arms 40 which are mounted upon alongitudinally extending sill 41 supported upon arms which blocks 22 areheld upwardly in project upwardly from the straps 13' mounted upon theeccentrics or cranks 14. The manner in which the pivotal movement of thestraps 13 is effected has been pointed out already. Obviously suchpivotal movement will cause oscillatory or swinging movements of thesill 41 upon which the kick-off bars are mounted so that the said barswill be caused to swing back and forth crosswise of the plates 4.

The rotary movement of the cranks or eccentrics 14 also will cause upthereof at the proper time with respect to the operation of theapparatus into position to engage any bar, round or other work which maybe supported upon the plates 4 when they have been lifted, as previouslydescribed, to transfer the same from the plates onto the downwardlyinclined adjoining step 43 which terminates against a shoulder 44.

For the purpose of lifting the work, whether of bar, round or othershape, I have provided reciprocatable plungers the inner sides of whichmove in parallel relation to and in contact with the shoulder 44 (Fig.3). It will be noted that the upper surfaces of the plungers 45 areinclined downwardly at a slightly greater angle than the surface of thestep 43 so that when the said plungers are moved upwardly so as to carrythe work to a position above the upper edge of the shoulder 44 it willslide therefrom onto the second step 46 whichterminatesagainst ashoulder 4'7. Plungers 48, similar to the plungers 45, are provided forlifting or elevating the work from the lower end of the step 46 so as tocause it to slide onto the upper edges of the series of parallel spacedbars 49 along which the work may be caused to move continuously or alongwhich it may be caused to move intermittently or stepby-step, ashereinafter will be described.

For the purpose of operating the plungers 45 and 48 I have supportedthem by means of connecting rods 50 and 51 upon angle irons 51 which inturn are supported upon the outer ends of arms 52 and 53 mounted upon arocker. shaft 54 supported in stationary bearings 55. It will be quiteapparent that upon rocking the shaft 54 the plungers 45 and 48 are movedsimultaneously in opposite directions so that when the plungers 45occupy a down position as shown in Fig. 3 the plungers 48 occupy theirup position. Any suitable means may be employed for effecting or causingrocking movement of the rock shaft 54. For the purpose of causingmovement of the work (other than rounds) downwardly upon the inclinedbars 49 I have provided push bars slidably mounted in stationary guides61. The lower edges of these bars are provided with teeth, as indicated,which engage the gear teeth 62 upon a rotatable shaft 63 supported insuitable stationary bearings 63. Means of any known construction orcharacter may be employed for effecting rotation of the shaft 63 throughgreater or less distances, depending upon the amount of rectilinearmovement it is desired to impart to the push bars 60. The push bars areeach provided with upwardly projecting brackets 64 located in adjoiningrelation to their inner ends which are adapted to contact with a bar orother like member which has been lifted by the plungers While the barsare still held by the plungers 48 in elevated position the reciprocatorypush bars 60 move inwardly and cause the projections 64 thereon tocontact with the said bars or other like and down movements of thekick-of arms 40 so as to carry the upper ends work and move thempositively onto the upper edges of the bars 49 and against the retardingblocks 65 slidably supported at intervals and in intermediate relationto groups or bars 49. The base portions of the retarding blocks 65 aremounted in guide-ways 66 provided by means of a bar 6"! properly shapedin cross section and supported upon the one side of the guides for thepush bars 60. I have provided counterweights 68 for the retardingdevices 65, the said counter-weights being connected to the saidretarding devices by means of flexible connections 69 which travel overgrooved rollers 70, as shown in Figs. 3 and 4. 9

If it is desired to pile or pack the bars or other similar work which isbeing handled upon the inclined bars 49 the retarding devices 65 areretained in place and theshaft 63 is operated so as to terminate theinward movements of the push bars 60 when the projections 64 thereonhave reached positions sufiicient to transfer or remove the work ontothe upper end portions of the upper edges of the said bars 49. If thework is in the form of bars of rectangular shape in cross section thebars will stand on their edges with their sides in contact, being heldin such position by the engagement of the retarding devices 65 with thelowermost or innermost of the said bars.

When the inward movements of the push bars terminate as stated it willbe apparent that at each inward movement thereof the bars upon theinclined supporting bars 49 will be moved forwardly or inwardly adistance equal to the thickness of a bar. When finally the retardingdevices have reached the limit of their inward movement they traveldownwardly upon the downwardly inclined guide sections '71 and whenlocated thereon occupy the positions as indicated by the dash lines '71in Fig. 3. When in such position it will be clear that the saidretarding devices occu'py positions below the upper edges of theinclined bars 49.

The lowermost of the bars of the pack or pile will fall downwardly ontoits side and as the operation proceeds the said bars will fall or dropone by one from the inner lowerends of the bars 49 onto the bars of thehot bed which hereinafter will be referred to and described in detail.Instead of rotating the shaft 63 through distances merely sufficient tocause inward movement of the push bars to the points indicated the saidshaft may be operated so as to cause movements of the said push barsinwardly to push each of the bars or other work which is being treatedindividually or separately all the way along the inclined bars 49 sothat they. are immediatelydeposited onto the bars of the hot bed. Incase of the latter operation it will be understood that the retardingblocks or members 65 are located in the position indicated by the dashlines in Fig.

upon the hot bed bars of the structure and it 1 will be seen that themechanism employed not only is of simple character but that it operatesin a manner to render it highly efficient and desirable. v

- An important characteristic of the mechanism as thus far described, isits capacity for effecting either quick transfer .of the work from theapproach table to the hot bed bars or a relatively slow transfer thereofby an intermittent movement, the work in the latter case being movedforward in packed formation.

It may be noted that the bars 49 are supported at their opposite endsupon longitudinally extending spaced sills 72 and '73.

The work having been transferred onto the hot bed bars as heretoforedescribed the latter are operated to effect transfer thereof crosswiseof the apparatus and to discharge the same onto what may be referred tobroadly as a discharge table by which it is conveyed away from the hotbed apparatus orstructure.

The hot bed bars consist of two series, those in one series beingdesignated and those in the other series 81. their opposite ends uponlongitudinally extending sills 82 and 83 while the bars 81 of the otherseries are supported upon the longitudinally extending sills 84 and 85.The sills 82 and 83 move in unison, that is to say, simultaneously andin like directions, being connected together at intervals by means oftie-bars 86. The same is true of the sills 84 and 85, the latter beingconnected together at intervals by means of crosswise extendingconnecting or tie-bars 87.

It may be noted that the hot bed may be of relatively great length, andit will be obvious that it would not be practical to employ single sillsof such length because of the difficulties which would arise due tocontraction and expansion with variations of temperature, consequentlythe longitudinally extending sills, such as 82 to 85 inclusive, are.dividedinto sections which may be of any suitable length.

- In order that the hot bed bars 80 and 81 shall operate to transfer orconvey the work across the apparatus it is necessary that they be givena movement either through a circular or an oval path, as is common inthe operation of hot beds. In the apparatus as illustrated the movementof the bars of the respective series toward the left should take placewhen in their upper positions in order that while in contact with thework they will convey the same toward the left, having reference to Fig.2 of the drawings.

For the purpose of effecting movements of the hot bed bars in the mannerstated the sills 82 and 83 are supported upon upright posts or bars and91 (Figs. 2, 7, 11 and 17) which. are located at intervals lengthwise ofthe structure, while the sills 84 and 85 are supported upon simlarupright posts or bars 92 and 93 likewise located at intervals lengthwiseof the structure. The upper ends of the respective posts or bars areconnected by means of jointed connections 94 to the said sills, whilethe lower ends thereof are connected by jointed connections to the outerends of pivotally supported arms.

The upright posts or 'bars 90 and 91- are connected by jointedconnections 95 (Figs. 7, 8, and 10) to the outer ends of arms 96 all ofwhich extend in the same direction from rock shafts 97 which aresuported at proper intervals in bearings 98 supported upon suitablesupports vor columns 99. The upright posts or bars 92 and 93 aresupported upon the outer ends of arms 100, similar to the arms 96, allof which extend in the same direction, which direction is opposite tothat in which the arms 96 extend. The arms 100 project from the shafts97 and the relation of each am 100 to an arm 96 which projects from theThe bars 80 are supported at same shaft is shown in Fig. 8 of thedrawings.

From an inspection of Fig. 8 of the drawings it will be apparent thatwhen ,the arms 96 move downwardly or are depressed the arms 100 will bemoved upwardly or elevated so as to effect simultaneous movement bars 90and 91 and the sills supported thereby, and of the posts 92 and 93 andthe sills supported thereby, in opposite directions.

For a the purpose of effecting simultaneous rocking movements of all ofthe rock shafts 97 I have provided each of them with a depending arm105, the arms at the opposite sides of the hot bed structure formingrows extending longitudinally of and throughout the length of theapparatus. The arms of the respective rows are connected by means ofactuating rods 106 and 107 so that all of the arms may be actuatedsimultaneously. nected to the actuating rods by means ofpivot "pins orbolts 108..

For they purpose of reciprocating the connecting rods 106 and 107 forrocking the shafts 97 I have provided a crankshaft 110 (Figs. 12, 13 and15) which may be rotated in any suitable manner. One end of a rod orlink 111 is connected to the crank 112 at one end of the crank shaft110. The opposite end of the link 111 is pivotally connected to a block113 which is adjustably mounted upon a downwardly extending arm 114which is rigidly connected with a rock shaft 115. Adjustment of theblock 113 upon the arm 114 is effected in known' manner by means of anadjusting screw or bolt 116. By varying the position of the block 113upon the arm 114 the arc or portion of a circle through which the of theupright posts or shaft 115 is rocked or moved may be varied. The

greater the are through which the shaft'115 is rocked the greaterwilllbe the distances through.

movements will be varied as such movements depend upon the extent of therocking movements'of the shafts 97 previously referred to.

.For the purpose of effecting horizontal movement of the bars 80 and 81I have provided a connecting rod 120 (Figs. 12, 13 and 16) one end ofwhich is connected to a crank 121 which extends radially of the axis ofthe shaft 110 in a direction at right angles to that of the crank 112.The opposite end of the connecting rod 120 is pivotally connected to anarm 122 which is mounted to rock upon the shaft 115, as will be apparentupon reference to Fig. 16 of the draw-' ings. A connecting rod 123 alsois connected at one end by a universal joint connection to the lower endportion of the arm 122 and at its opposite end by'a universal jointconnection 124 to a block 125 which is mounted upon a horizontal arm 126which is astationary pivot 127.

In and out adjustment of the block 125 is'effected by an adjusting boltor screw 128which is mounted upon the said arm, as is clearly shown inFig. 12 of the drawings. A connecting rod 130, which extendslongitudinally or lengthwise of the apparatus and substantiallythroughout the length thereof, is pivotally connected at 131 pivoted atone end upon tend downwardly from the cross bars 87, to-

to the arm 126. It will be apparent that rotation of the crank shaft 110will effect reciprocatory movements of the connecting rods 120 and 123,which movements acting upon the am 126 will cause an oscillatingmovement thereof about the pivot 127. Such oscillating movement impartsto the connecting rod 130 a reciprocating movement. The said rod isconnected at intervals to horizontally extending arms 132 which projectlaterally from upright posts or columns 133 which are pivotallysupported at their lower ends in sockets as indicated at 134 (Figs. 1and.

7) provided upon pedestals or bases 135.

The upper ends of the said posts or columns 133 are rotatably orrockingly supported in bearings at 136 provided upon stationary crossbars 137. The upper ends of the posts'or columns 133 are provided withbars which are rigidly connected thereto at points intermediate theirends so as to provide oppositely extending arms 138 and 139. To the arms138 connecting rods or links 140 are connected by universal jointconnections as indicated at 142. At their opposite ends the connectingrods or links 140 are connected by universal joint connections, asindicated at 143, to lugs or projections which exwhich reference hasbeen made previously. Like connecting rods or links 145 are connected byuniversal joint connections, as indicated at 146, to the arms 139. Attheir opposite ends the said connecting rods or links are connected byuniversal joint connections, as indicated at 147, to lugs or projectionswhich are provided upon the connecting bars 86.

It will be recalled that the connecting bars 86 and 87 respectivelyconnect together the sills 82 and 83 and 84 and 85, and also that theserespective pairs of sills each support a series of hot bed bars.

It will be apparent that upon the rocking of the posts or columns 133the arms 138 and 139 are rocked therewith and that such rocking movementeffects reciprocating movements of the connecting rods or links 140 and145 simultaneously in opposite directions so that the two series of hotbed bars are simultaneously moved horizontally in opposite directions.It having been already set forth that these bars are simultaneouslymoved in vertical directions it will be apparent that they trace pathswhich may be circular or oval, which will depend upon the extent of themovements imparted thereto by the means previously described foreffecting the respective vertical and horizontal movements thereof.

- The movement of the respective series or groups of hot bed bars withrelation to each other as described is known in the art and theadjustment of the mechanism for operating the said bars to effect thesemovements will be well understood by those skilled in the art to whichthe invention pertains.

To retain the sills 82- to inclusive, their supports, and the partssupported thereby in proper position and at the same time permitvertical and lateral movements of said sills, I have provided at properintervals stationary spaced guide lugs 148 and 149 (Fig. 10) with whichthe lower edge portions of bars 148 and 149' of T-shape in cross sectionare in slidable engagement. It is assumed that the bars 148' aresupported at their, opposite ends upon the sills 82 and 83 and that thebars 149' are supported at their opposite ends upon the sills 84 and 85.

The work finally is discharged from the hot bed bars onto the shufllebars 150 of the discharge part of the structure and by the latter aretransferred ontothe rotating rolls 151 by which it is conveyed away to apredetermined position.

The discharge mechanism may be of any usual known construction and willnot be referred to or described in further detail.

It is desirable in hot bed structures that means may be provided wherebythe work may be conveyed rapidly across the same or more slowly, and tothat end I have conceived it to be desirable to provide ahot bedstructure with means whereby hot bed barshaving either smooth or notchedtop edges may be provided. This desirable-feature of construction may beprovided in various ways and by different means, but obviously thesimpler the means for effecting the desired ends the better. In thepresent construction, which is that which I now prefer, I employ hotbedbars each of which in cross section is of forked shape, as bestindicated irrFig. 10 of the drawings. Upon reference to that figure ofthe drawings it will be noted that the hot bed bars are substantially ofV-shape in cross'section whereby each bar provides two portions 155 and156 either of which may be placed in vertical position to receive andsupport the work as it travels across I the machine.

In effect these two portions 155 and'156 (Figs. 1, 2, 3, 7, 10, 11, 11and 17) constitute two sep-- arate bars because when adjusted so thatthe branches 156 are in use the branches 155 are in inactive orinoperative position, and vice versa. In Fig. 10 the notched branches ofthe bars occupy vertical positions so that the work is movedstep-by-step or from notch to notch in the operation of the apparatus.When one of the branches of the respective bars occupies a verticalposition the other branch thereof will occupy a position in angularrelation to a vertical plane or line, and when in such position will notcontact with the work. That will be apparent from an inspection of Fig.10 of the drawings.

In order that the the desired angular position to bring either thebranches 155 or the branches 156 thereof into vertical position for usethey are pivoted at their opposite ends upon pedestals 157 which aremounted upon the respective sills 82 to 85. The bars are provided inadjoining relation to their opposite ends with spaced lugs 158 which fitupon opposite sides of the pedestals 157. The said pedestals and thesaid lugs are provided with openings which extend therethrough throughwhich pivot pins 160 extend to pivotally connect the said bars to thesaid pedestals.

For the purpose of effecting desired pivotal movements in the samedirection simultaneously of all of the said bars so as to present thedesired branches thereof into position to receive the work I haveprovided a rock shaft 161 (Fig. 11) supported inbearings 161'.Electrically actuated means for rocking said shaft is indicated at 162.The said rock shaft is provided with crank arms 163 which extend in thesame direction radially therefrom. The said rock shaft is adapted to berocked in either direction through proper dis- -tances, such distancesbeing controlled by a limit bars may be adjusted into bars 174 and 175,as indicated at 176. The conpositions.

necting bars 174 and 175 respectively comprise two members located inspaced parallel relation to each other as shown in Fig. 11. The bars 174and 175 are made up of sections of suitable length the adjoining ends,of which are connected by means of short links or bars 177, theconnections being made by pins and slots as indicated at 178. By thisform of connection the expansion and contraction due to whatever causesare provided for.

Rocking movements of the arms and 17-1 cause reciprocatory movements ofthe connecting links 172 and 173 which movements are imparted to theconnecting bars 174 and 175. The bars 174 and 175 are loosely pivotallyconnected to the lower ends of lever arms and 181, the lower ends of thesaid arms'extending between the members of which the bars 174 and 175are formed and being connected thereto by pivot pins 182 and 183. Theupper ends of the lever arms 180 are connected to the adjoining ends ofthe hot bed bars 80 while the upper ends of the leverarms 181 areconnected to the adjoining ends of the hot bed bars 81. The outer endsof the pivots by which the adjoining end portions of the bars 80 areconnected to the sills 83 project through openings 185 at the upper endsof the lever arms 180. The upper ends of the said lever arms havefurther connection with the adjoining ends of the said bars 80 by meansof bolts 186 which extend therethrough and through projections 187, asis clearly indicated in Figs. 7, 11 and 11 The upper ends of the leverarms 181 are in like manner connected to the adjoining ends of the bars81, as will be apparent from an inspection of Figs. 7 and 11 of thedrawings.

For the purpose of positively limiting the piv-- otal movements of thehot bed bars 80 and 81 so as to insure that either the branches 155 or156 of the respective hot bed bars 80 and 81 will occupy a verticalposition as may be desired I have provided means for limiting thepivotal movements of the said bars. The said means comprises projections188 (Figs. 2, 7, and 10) upon the connecting bars 174 and 175 whichextend downwardly therefrom and which are located between relativelystationary spaced stops 189 consisting of short sections of angle ironwhich are arranged in couples, one couple being secured upon the bottomedge of a side sill 83 and another couple being located upon the bottomedge of a side sill 84.

' The relatively stationary stops 189 projectlaterally and outwardly asindicated in- Figs. 2 and 7 so that the co-operating projecting movablestop members 188 which are carried by the re-' spective connecting bars174 and 175.are located When the movable projecting stop members 188 arein the position shown in Fig. 10 of the drawings it will be noted thatthe notched branches 156 of the hot bed bars 80 and 81 occupy verticalUpon movement of the v connecting bars 174 and 175 to carry the movableprojecting stops from the position shown in Fig. 10 into position tocontact with the opposite stops of the relatively stationary stops 189,movement of the lever arms 180 and 181 will be efiected to cause pivotalor rotary movement of the hot bed bars 80 and 81 into positions tolocate the smooth-edged branches 155 in vertical positions.

From the foregoing description it will bear:- parent that by causing theconnecting rods 172 and 173 to move longitudinally correspondingmovements are imparted to the connecting bars 174 and 175 as a result ofwhich the hot bed bars 80 and 81 are rotated so as to adjust either oneof the branches 155 or 156 thereof into vertical position as may bedesired. a

If it be desired to feed the work stepby step along the bars and acrossthe apparatus the adjustment as shown in Figs. 10, 11 and 11 will beemployed wherein the branches having the notches in the top edgesthereof are shown in vertical operative position. When in that positionthe branches 155 with the smooth outer edges are located in inoperativeor inactive positions. However, if it is desired to let the raw materialroll across the hot bed or when cooling material of such section aswould not fit into the notches the bars should be turned so as to adjustthe branches 155 into vertical positioned place.

To those familiar with the art to which this 100 and 156 are of integralconstruction,,being em- 105 bodied in a single unit or bar, I desire toemphasize the fact that my invention comprehends any constructionwherein means is provided for the utilization of bars. having. retardingedges as notches therein, or bars having unretarding, as 1 smooth, outeredges along which the work may be caused to travel as may be elected.

In Fig. 17 of the drawings I have shown a construction in which'theparts which are illustrated therein are substantially identical with thecor- 1 responding parts which are correspondingly numbered in theprevious figures of the drawings. The substantial difference between theconstruction as illustrated in Fig. 17 and in the corresponding figurenumbered 3 resides in-the fact 1 that in the former the bars 49 and thepush bars 60 are omitted. .Such omission permits also the omission ofthe means for operating the push bars 60 and also certain meansassociated with the transfer bars 49. 1

In the construction as illustrated in Fig. 17 the work when elevated bythe plungers 48 is discharged onto a downwardly and inwardly extendingflange 190 which projects laterally from the upper edge portion of thewall which forms the 1 shoulder 47. A construction such as isillustrated in Fig. 17 may be employed when it is not desired to pack orpile the work before its delivery onto I the hot bed bars 80 and 81.

In the claims directed to mechanism for de- 1 livering work to the hotbed bars olthe hot bed the reference to hot bed bars in the introductionportion, used by way of description rather than limitation, is intendedfor any suitable receiving supporting means, hot bed bars or thel like.

It will be seen that by myinvention I have provided an apparatuscomprising a number of parts combined into a. unitary structure andcooperating. to effect in a highly eflicient manner the 1 resultsdesired. s

Having thus described my invention, what. I claim and desire to secureby Letters Patent is:'

1. In a hot bed, the combination of arr-approach table, means fordelivering work into co-operative 1 relation to said table, means foryieldingly supporting said table, means for elevating said table toengage said work, and means actuated by the movement of the elevatingmeans for dis-; charging the work from the said table.

2. A hot bed comprising, in combination, work delivery means,an'approach table, means for ele-' vating the said table bya yieldingpressure against the support therefor, means rendering the said yieldingmeans effective to elevate the said table, and means actingsimultaneously with the elevation of said table to discharge the worktherefrom.

3. In the work delivery means of a hot bed, the combination of adelivery table, pivoted arms for supporting said table, yielding meanstending to elevate said arms,- means for pulling the said armsdownwardly against the action of said yielding means, means forreleasing the said pulling means to permit the said yelding means tocause upward movement of the said arms and of the table supportedthereby, and means operating simultaneously for discharging the workfrom said table.

4. In the work delivery means of a hot bed, the combination of a workdelivery table, pivoted means for supporting said table, yielding meansfor supporting the outer swinging portion of the pivoted means, the saidyielding means tending to cause upward movement of the sa'd pivotedsupporting means, means operating to hold the said supporting means andthe table supported thereby in depressed position, means for controllingthe said means for holding the said supporting means in depressedposition, and means controlled by the last mentioned means forcontacting with and discharging the work from the sa d table.

5. In the work delivery means of a hot bed, the combination of a workdelivery table, means for yieldingly supporting said table, meansnormally holding the said last mentioned means with. the table supportedthereby in depressed position, resilient means tending'to hold the saidtable and its support'ng means in elevated position, means for releasingthe said table and its supporting means for permitting upward movementthereof by the action of the said yielding means, and members actingautomatically to contact with the work and remove the same from the saidtable.

- influence of the said resilient supporting means,

and means automatically controlled by the said releasing means forcontacting with the workand transferring the same from the said table.

7. In the work delivery means of a hot bed, the combinat'on of adelivery table, means for delivering work into position over the saidtable, resilient means for yieldingly supporting said table, bell cranklevers, links having connection at their lower ends with the horizontalarms of the said bell crank levers, the upper ends of the said linkshaving operative connection with the said table, the said linksoperating when the said bell crank levers occupy one position to holdthe said table in depressed position in opposition to the forceexertedby the said resilient supporting means, means for effectingpivotal and bodily movements of the said bell crank levers to actuatesaid links to effect raising and lowering of the sa'dtable, and meanshaving connection with the said bell crank levers and operated by themovements thereof to contact with and trans-, fer the work from the saidtable.

8. In the work delivery means of a hot bed, the combination of a workdelivery table, means for conveying work into position over the,saidtable, resilient means for yieldingly supporting the said table, aneccentric shaft having eccentric portions at intervals therein, strapsmounted upon the said eccentric portions, arms extending laterally andhorizontally from the said straps, links having connection at theirlower ends with the said arms and at their upper ends having operativeconnection with the said table and operating when in one position tohold the said table in depressedposition, the said straps also havingarms extending laterally in substantially right angular relation to thefirst named arms. pivoted links to the swinging ends of which the outerends of the said last mentioned arms are the said eccentric shaft causesboth pivotal and bodily movements'of the said straps and of the armsprojecting therefrom wh'ereby movements of the said links are effectedto cause vertical up and down movements of the said table, and the saidstraps also being provided with upwardly extending arms having membersprojecting uppivotally connected whereby rotary movement of wardlytherefrom, the upper ends of which terminate in cooperative relation tothesaid table, the said members being moved upwardly and downwardly andalso pivotally to effect transfer of the work from the said table whenthe latter is in elevated position.

9. In a hot bed, a first set of hot bed members in horizontal positionhaving notched and plane surfaces alternatively presented on each hotbed member of the first set, a second and separate set of hot bedmembers in horizontal position having notched and plane surfacesalternatively presented on each hot bed member of the second set andmeans for moving one set of members longitudinally with respect to theother set and at the same time varying the height of one set of memberswith respect to the other set..

10. In a hot bed, a first substantially horizontal work-supporting bodyterminating in a work-engaging surface, a second substantiallyhorizontal work-supporting body terminating in a work-engaging surfacealternating with the first surface in supporting the work duringoperation of the bed, means for lifting and moving the first body withrespect to thesecond to bodily support and to carry the work across thebed, a third substantially horizontal work-supporting body terminatingin a work-engaging surface of character different from the first, andmeans for shifting the third body into work-supporting position insteadof the first body, whereby the surface of the third body instead of thesurface of the first body alternates with the surface of the second bodyin supporting the work.

11. In a hot bed, a first set of substantially horizontal bars havingwork-supporting surfaces,

a second set of substantially horizontal barsthe sets of bars relativelyto one another to bodily support and to carry the work across the bedand positive means operating in unison'for substituting differentwork-supporting surfaces for the work-supporting surfaces of all of thebars of one set.

12. In a hot bed, a first set of generally parallel hot bed 'barsterminating in work-supporting surfaces, a second set of hot bed'barsgenerally parallel to and between bars of the other set and terminatingin other work-supporting surfaces, means for moving one set of barsvertically and longitudinally with respect to the other set and meansfor substituting work-supporting surfaces of different character foreach of the work-supporting surfaces of the two sets.

13. In a hot bed, a plurality of sets of cooperating generally parallelbars, each having worksupporting surfaces on the tops of the bars, meansfor relatively moving the barsbodily longitudinally and bodilyvertically with respect to one another, so that the work is supportedalternately onone surface or another, and positive means for changingone of the work-supporting surfaces as a whole from a smooth to anotched and,

from a notched to a smooth surface.

14. In a hot bed, a plurality of longitudinally movable substantiallyhorizontal bars including supports having notched surfaces and supportshaving plane surfaces, means for shifting the surfaces relativelyupwardly and downwardly so as to have the notched or plane surface foreach bar; alternatively, either one higher than the other, means formoving the bars upwardly, longitudinally forwardly, downwardly, andrearwardlywhile in their lowered positions, to advance the work alongthe hot bed longitudinally of the bars by bodily support and transfer ofthe work upon and by the bars during the forward movement of the bars,and intermediate bars located alternately between the movable bars andupon which the work is adapted to be sup-' ported while the movable barsare being shifted in their position.

15. In a hot bed, the combination of a couple of series of hot bed bars,means for delivering work onto the said bars at. one side of the hot bedstructure, a plurality of couples of sills extending longitudinally ofthe hot bed structure, one of which couples supports one series of thesaid bars and the other of said couples the other series thereof, meansfor connecting the sills of the respective couples together, uprightpivoted members for supportingthe said sills, the said members havingpivotal connection with the said sills, the said upright supportingmembers atopposite sides of the hot bed being arranged in pairs, meansfor effecting movements simultaneously of the members of allof the pairsvertically in opposite directions, and means for simultaneouslyeffecting lateral movement of the two couples of sills in oppositedirections, and means for varying both the vertical and horizontaldistances through which the said sills are moved.

16. In a hot bed, the combination of a couple of series of hot bed bars,separate pairs of sills for supporting the bars of the respectiveseries, connections extending between the sills of the respective pairsand rigidly uniting the same, pivotally supported links having pivotalconnection with the said sills for supporting the same, the links atopposite sides of the hot bed structure being arranged in pairs, rockshafts having arms extending in opposite directions upon which the saidsill supports of the respective pairs are pivments of the said links,the links of the respec tive pairs moving simultaneously and alternatelyin opposite directions.

1'7. In a hot bed, the combination of a couple of series of hot bedbars, separate pairs of sills for supporting the bars of the respectiveseries, connections extending between the sills of the respective pairsand rigidly uniting the same, pivotally supported links having pivotalconnection with the said sills for supporting the same, the links atopposite sides of the hot bed structure being arranged in pairs, rockshafts having arms extending in opposite directions upon which the saidsill supports of the respective pairs are pivotally mounted, means forrocking said arms to cause alternate movement of the respective pairs ofsills vertically in opposite directions, links extending in directionssubstantially parallel with the connections between the sills of therespective pairs, the said links being arranged in pairs, one of thelinks of each pair having operative connection at its outer end to onepair of sills and the other link of each pair having operativeconnection at its outer end to the other pair of said sills, means forcausing reciprocating other series of bars being supported upon theother pair of sills, bars extending betweenand rigidly connecting thesills of the respective pairs,

vertically extending links for. supporting said sills,

the said links being pivotally supported at their lower ends and havingpivotal connection at their upper ends to the said sills, the links atopposite sides of the hot bed being arranged in pairs one link ofeachpair being connected to one of the sills of one pair of sills andthe other link of each pair being connected to one of the sills of theother pair of sills, rock shafts, arms projecting in opposite directionsfrom the said shafts, upon which arms the lower ends of the links of therespective pairs are mounted, means for simultaneously rocking theshafts at the opposite sides of the hot bed to cause simultaneousvertical movements of the two pairs ofzsills in opposite directions, aplurality of vertical rock shafts located in a plane extending mediallyof the said hot bed. the. said rock shafts being pivotally supported attheir upper and'lower ends, arms extending in opposite directions fromthe upper ends thereof, links pivotally connected at theirinner ends tothe said arms, the opposite outer ends of the said links being pivotallyand operatively connected to the sills of the respective pairs of sills,and means for rocking the said shafts to cause simultaneous andalternative movements of the said pairs of sills in opposite directions.

cluding supports having notched surfaces and 19. In a hot bed, thecombination of a couple of series of hot bed bars, a couple of pairs ofsills "for supporting the said bar's, one series of bars beingsupportedupon one pair of sills and the other series of bars beingsupported upon the other pair of sills, bars extending between andrigidly connecting the sills of the respective pairs, vertic'allyextending links for supporting said sills, the said links beingpivotally supported at their lower ends and having pivotal connection attheir upper ends to the said sills, the links at opposite sides of thehot bed being arranged in pairs, one link of each pair being connectedto one of the sills of one pair of sills and the other link of each pairbeing connected to one of the sills of the other pair of sills, rockshafts, arms projecting in opposite directions from the said shafts,upon which arms the lower ends of thelinks of the respective pairs aremounted, means for simultaneously rocking the shafts at the oppositesides of the hot bed to cause simultaneous vertical movements of the twopairs of sills in opposite directions, a plurality of vertical rockshafts located in a plane extending medially of the said hot bed, thesaid rock shafts being pivotally supported at their upper and lowerends, arms extending in opposite directions from the upper ends thereof,links pivotally connected at their inner ends to the said arms, theopposite outer ends of the said links beingpivotally and operativelyconnected to the respective pairs of sills, means for rocking the saidshafts to cause simultaneous and alternative movements of the said pairsof sills in opposite directions, and a singlemeans common to all of saidrock shafts for controlling and varying the extent of rocking movementthereof.

20. In a hot bed, the combination of a couple of series of bars forsupporting the work while it' is being cooled, a couple of pairs ofsills for supporting the respective series of bars, means for rigidlyconnecting the sills of the respec tive pairs, a series of deviceshaving operative connection with the respective pairs of sills, andmeans common to all of the said devices for effecting simultaneousoperation thereof to cause simultaneous movements of the said pairs ofsills alternately in opposite directions.

'21. In a hot bed, the combination of a plurality of series of bars forsupporting the work and conveying it across the hot bed while it isbeing cooled, means common to all of the bars of the plurality of seriesfor effecting vertical movements thereof, the movements of the bars ofthe different series being effected simultaneously and in oppositedirections, and means common to all of the bars of the plurality ofseries for effecting horizontal movements thereof, the movements of thedifferent series taking place simultaneously in opposite directions.

22. In a hot bed, the combination of a plurality of series of bars forsupporting the work and conveying it across the hot bed while it isbeing cooled, means common to all of the bars of the plurality of seriesfor effecting vertical moveof the different series being effectedsimultaneously and in opposite directions, means common to all of thebars of the plurality of series for effecting horizontal movementsthereof, the movements of the different series taking placesimultaneously in opposite directions, and separate means for varyingthe extent of vertical and horizontal movements of the bars of therespective series.

23. In a hot bed, a plurality of first substantially horizontallongitudinally movable bars insupports having plane surfaces,- means forshifting the surfaces relatively upwardly'and downwardly so as to havethe notched or plane surface for each bar, alternatively, either onehigher than the other, means for moving the first bars upwardly,longitudinally forwardly, downwardly, and rearwardly while in theirlowered positions, to advance the work along the hot bedlongitudinallyof the bars by bodily support and trans-' fer of the work and by thebars during the forward movement of the bars and intermediate likemovable bars and means for moving them located alternately between thefirst movable'bars and upon which the work is adapted to be supportedand moved while the first movable bars are in lowered position.

24. In a hot bed, a plurality of sets of worksupporting bars having onetype of surface available on one set and a different 'type of surfaceavailable on the other set, and means for lifting and longitudinallymoving, and lowering and rearwardly moving all of the bars of one setconcurrently to bodily support and positively move the work in adirection longitudinal ofthe'bars of the moving set.

25. In a hot bed, a plurality of sets of worksupporting bars having onetype of surface available on one set and a different type of surfaceavailable on the other set, and means for lifting and longitudinallymoving, and lowering and rearwardly moving all of the,bars of both setsconcurrently and oppositely to bodily support and positively move thework in a direction longitudinal of the bars. 7

26. A hot bed comprising hot bed bars extending transversely thereof thesaid bars being divided into a couple ofseries, means for pivotallysupporting the said bars, each of the said bars comprising a couple ofwork supporting edges, one of which is, adapted to retard the movementof the work thereupon and the other one of which is plane, whereby themovement of the work thereupon is facilitated, and means for adjustingthe said bars so as to position either of said edges for receiving thework.

2'7. A hot bed comprising hot bed bars extending transversely thereof,the said bars being divided into a couple of series, means for pivvidetwo work supporting edges one of which has notches therein and the otherof which is plane, means for pivotally supporting the said bars, andmeans for effecting pivotal movement of said bars to position either thenotched edge or the plane edge to receive the work.

29. A hot bed comprising a plurality of hot bed bars extendingtransversely thereof, each of the said bars being of V-shape in crosssection to provide two work supporting edges one of which has notchestherein and the other of which is plane, means for pivotally supportingthe said bars, and means for simultaneously causing pivotal movement ofall of the said bars to position either the notched edges or the planeedges thereof to receive the work. i

30. A hot bed comprising hot bed bars extending transversely thereof,the said bars being divided into a couple of series, each bar of eachseries comprising a couple-of work supporting edges one of which isprovided with ,notches and the other one of which is plane, and meansfor simultaneously adjusting all of the said bars of each series toposition either of the edges thereof to receive the work.

31. A hot 'bed comprising hot bed bars extending transversely thereof,the said bars beingdivided into a plurality of series, means forpivotally supporting the bars of each series, each of the said barscomprising a couple of work supporting edges one of which edges isnotched and the other one of which is plane, and means forsimultaneously causing pivotal movement of all of the bars of all of thesaid series so as to simul taneously position either of the edges of therespective bars to receive the work.

32; A hot bed comprising hot bed bars extending transversely thereof,the said bars being divided into a couple of series, and means common toall of the said bars for efiecting adjustments thereof simultaneously toposition either plane or notched edge bars for receiving and supportingwork.

33. A hot bed comprising hot bed bars extending transversely'thereof,the said bars being divided into a couple of series, means'common to allof the said bars for effecting adjustments thereof simultaneously toposition either plane or notched edge portions for receiving andsupporting the work, and means for causing the work to traveltransversely of the hot bed structure upon the said bars; I

34. In a hot bed, the combination of a couple of series of hot bed bars,means for delivering work onto the said bars at one side of the positesides of the hot bed being arranged in.

pairs, means for effecting movements simultaneously of the members ofall of the pairs vertically in opposite directions, and means forsimultaneously' effecting lateral movement of the two couples of sillsin opposite directions.

35. In combination, means for feeding work, levers supported inco-operative relation to the work, eccentric means having pivotalconnection with said levers intermediate their ends, means for causingrotation of said eccentric means, and means for causing swingingmovement of said levers about the said eccentric mean upon rotation ofthe latter.

36. In combination, means for feeding work, levers located inco-operative relation to said work and extending in directionstransversely of the feeding movements thereof, a shaft having eccentricportions, means for pivotally connecting the said levers intermediatetheir ends to the said eccentric portions, links each of which ispivoted at one end to a stationary pivot, pivots for connectingtheopposite swinging ends of said links to the ends of said levers distantfrom the said work, and means for rotating the said shaftto causelengthwise and pivotal movements ,of the said levers whereby the saidlevers operate to discharge the work from the feeding means.

